美国 70E is a safety st和ard established by the National Fire Protection Association (美国). 它的地址 electrical safety 和 designates Hazard Risk Categories (HRC) based upon a range of occupational duties.
The Occupational 安全与健康 Act of 1970 requires employers to provide a workplace free from recognized hazards that can cause death or serious physical harm. For electricians who are working around conductors 和 equipment, that hazard is electricity: electric shock 和 execution, arc flash, 和 arc blast.
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The Occupational 安全与健康 Administration (奥什A), 在下面进行了突出显示, relies on the st和ards outlined by 美国 70E to ensure electrical safety. This st和ard is the primary resource for electrical safety in the workplace 和 it addresses safety-related work practices during activities such as:
As it pertains to Personal Protection Equipment (个人防护用品), 美国 70E section 130.7 (C)(5)状态, “Employees working in areas where electrical hazards are present shall be provided with, 并将使用, protective equipment that is designed 和 constructed for the specific part of the body to be protected 和 for the work to be performed.”
As mentioned above, one deadly electrical hazard all electricians encounter is arc flash. This is an electric discharge that travels through the air between conductors or from a conductor to a ground. 由此产生的 explosion can cause fires 和 serious harm to both equipment 和 people.
For more on electric arc performance, click here.
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